**Core Concept**
The release of free fatty acids (FFA) from adipose tissue involves the breakdown of triglycerides into glycerol and FFA, a process known as lipolysis. This process is regulated by various hormones and catecholamines.

**Why the Correct Answer is Right**
Glucagon, epinephrine (adrenaline), and norepinephrine are well-known hormones and catecholamines that stimulate lipolysis in adipose tissue. Glucagon acts through the G-protein coupled receptor, glucagon receptor (GCGR), to activate adenylate cyclase, increasing cyclic AMP (cAMP) levels. This leads to the activation of hormone-sensitive lipase (HSL), which in turn breaks down triglycerides into FFA and glycerol. Epinephrine and norepinephrine also act through beta-adrenergic receptors (B2 and B3) to increase cAMP levels and activate HSL.

**Why Each Wrong Option is Incorrect**
**Option A:** Insulin is a hormone that inhibits lipolysis by activating protein kinase B (Akt), which phosphorylates and inhibits HSL. Therefore, insulin does not accelerate the release of FFA from adipose tissue.
**Option B:** Growth hormone (GH) stimulates lipolysis, but it is not listed among the options. GH acts through the JAK-STAT signaling pathway to increase cAMP levels and activate HSL.
**Option C:** ACTH (adrenocorticotropic hormone) stimulates lipolysis, but it is not listed among the options. ACTH acts through the G-protein coupled receptor, melanocortin 2 receptor (MC2R), to increase cAMP levels and activate HSL.

**Clinical Pearl / High-Yield Fact**
Insulin's inhibitory effect on lipolysis is a key mechanism by which it lowers blood glucose levels. This is in contrast to glucagon, which raises blood glucose levels by stimulating gluconeogenesis and glycogenolysis.

**Correct Answer:** A. Insulin.